How hard is your Water
Pre Lab
1. Find out from your parents if you have city/town or well water.
2. Ca2+ and Fe2+ are the two main ions that deal with water hardness which ion do you think would cause water to be hard and why? (this is a guess make an informative guess, do a little research)
3. Which do you think will be harder town/city or well water?
Materials
1. Tap water
2. 10mL graduated cylinder
3. Potassium Thiocyanate (KSCN) (Handle with care)
4. Ethanoic Acid (Handle with care)
5. Sodium Oxalate
6. Dropper
Procedure
1. Measure 2-mL of your water sample
2. Add 3 drops of (KSCN) to the sample
3. Write down observations
4. Measure another 2-mL sample of water
5. Add three drops of Ethanoic Acid
6. Then add three drips of Sodium Oxalate
7. Mix well
8. Record Observations
Observations
Pre Lab
1. Find out from your parents if you have city/town or well water.
2. Ca2+ and Fe2+ are the two main ions that deal with water hardness which ion do you think would cause water to be hard and why? (this is a guess make an informative guess, do a little research)
3. Which do you think will be harder town/city or well water?
Materials
1. Tap water
2. 10mL graduated cylinder
3. Potassium Thiocyanate (KSCN) (Handle with care)
4. Ethanoic Acid (Handle with care)
5. Sodium Oxalate
6. Dropper
Procedure
1. Measure 2-mL of your water sample
2. Add 3 drops of (KSCN) to the sample
3. Write down observations
4. Measure another 2-mL sample of water
5. Add three drops of Ethanoic Acid
6. Then add three drips of Sodium Oxalate
7. Mix well
8. Record Observations
Observations
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